Origin: This territory was settled well before the Revolution, though the land was not granted by the English government but sold to speculators by an Abenaki chief. Because of this, the US-Canada boundary in the area was disputed for nearly 60 years. In 1832, exasperated residents established Indian Stream Republic and declared themselves a sovereign nation, with their own constitution and separate government. After four years, Canada relinquished claim to the territory, and residents accepted New Hampshire authority. Indian Stream Republic was incorporated with Pittsburg in 1840, though the official boundary lines were not established until 1848. The name Pittsburg is in honor of William Pitt, Prime Minister of England.

Villages and Place Names: Moose Alley

Population, Year of the First Census Taken: 301 residents in 1830

Population Trends: Population change for Pittsburg totaled 236 over 54 years, from 639 in 1960 to 875 in 2014. The largest decennial percent change was an increase of 16 percent between 1980 and 1990, which was followed by a four percent decline in population over the next decade. The 2014 Census estimate for Pittsburg was 875 residents, which ranked 193rd among New Hampshire's incorporated cities and towns.

Population Density and Land Area, 2014 (US Census Bureau): 3.1 persons per square mile of land area, the third lowest among the cities and towns. Pittsburg contains 282.3 square miles of land area and 9.0 square miles of inland water area.

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